摘要:
A transmission-hub unit (1) for a wind energy installation includes transmission (3) including a single piece rotatably supported transmission part (12, 27) which comprises the input gear wheel (1 1) of the transmission (3) as well as the blade-hub (2). Preferably, only two radial bearings (16, 18) for the support of the blade-hub (2) and the gear wheel (11) are provided. Additionally, axial bearings may be provided. A particularly compact, short, and light-weight arrangement for the transmission (3) and the blade-hub (2) is obtained thereby. The concept is particularly suitable for large wind energy installations.
摘要:
A press, a method for operating the press, and a lubricating arrangement for the press or for another working machine. The press has a press drive that is connected with a ram of the press, which ram can be moved via a transmission in a working direction (Z). The transmission has at least one sliding bearing with one and, preferably, several lubricating points. In a first press operating state, all the lubricating points of the sliding bearing are supplied with lubricant at a first lubricant pressure (p1). In a second press operating state, the thickness of the lubricant film formed in the sliding bearing drops below a minimum value in the region of at least one first lubricating point and lubricant is supplied thereto at a second greater lubricating pressure (p2) in order to prevent increased wear of the sliding bearing.
摘要:
A reshaping device according to the invention has at least one ejector, for example, in the form of a cylinder pin (11) which is shifted by the workpiece (6) against the pressure from a pressure storing cylinder (17) or other suitable energy storing device before and/or during the reshaping of the workpiece (6). The workpiece ejection occurs by the work stored in the energy storing device.
摘要:
In a press with an adjustable drive arrangement including, in addition to, a main drive, an adjustment drive for dynamically changing the press kinematics of the manually predetermined press angle-plunger stroke. Means are provided, whereby during a transforming process, the speed of a movable plunger of the tool part which engages the workpiece for the transformation thereof, is reduced, essentially to zero, for the moment of engagement between the plunger and the workpiece, so as to provide for a smooth impact force engagement between the plunger and the workpiece.
摘要:
In a wind power generation installation comprising a rotor with rotor blades mounted on a tower and connected via a transmission to a generator for generating electric power, an electric machine operable as a motor is also connected to the transmission for applying a driving torque to the transmission so as to bias the transmission so as to hold the gears of the transmission in constant engagement in order to prevent the detrimental effects of torque variations on the gears of the transmission.